Window-ventilator.



M. G. BUNNELL. WINDOW VENTILATOR. APPLICATION FILED JAN.25, |912.

Patented'July 20, 1915.

Mon'roiv C. BUNN'ELL," or CHICAGO, ILLIivoIs, Ass'IeNon 'ro FREDERICK C. AUSTIN, or

` CHICAGO, ILLINOIS.

wINDow-vnnrmeron.

i y Specification of Letters'yatent.

Patented July 20, 1915.

Application led January 25, 1912. Serial No. @3,3862

To all 'whom z'z. may concern Be it known that I, MoR'IoN G. BUNNELL, a citizen of the United States of America, and yresident of Chicago, Cook county, Illinois, have invented a certain new and useful Improvement in Window-'Ventilators, of which the following is a specification.

Mv invention relates towindow ventilatorsuof that kind in which the Ventilating devices are supported by a frame or body adapted to be inserted in the window frame below the lower sash thereof.

Generally stated, the object of my invention is to provide a novel and efficient window ventilator of the foregoing general character. A

Special objects are to provide novel and eflicient means for securing the` ventilator in the window; to provide a iexible curtain which swings with the air current, and which is supported at its upper edge in a manner permitting more convenient` `removal thereof than heretofore; to provide means for limitingthe swing of said curtain by causing it to flex and bulge toward the incoming air; to provide an improved general construction of the box or hollow body.

of the ventilator and the` means for affording access to the interior thereof; to provide an improved construction and arrangement of the screen through which the incoming air passes before `encountering the said curtain; and to provide certain details and combinations tending to increase the general efficiency of a ventilator of this particular character.` 4 To these and other useful ends, my in-` vention consists in matters hereinafter set forth and claimed.

In the accompanying drawings-Figure l j is a perspective of a window broken awayv at one side thereof to show the ventilator embodying the principles of my invention, one end of the frame of said ventilator being also shown in vertical section." Fig. 2 is an enlarged cross'secti'on of the said ventilator. Fig. 3 is a vertical longitudinal section on line 3-3 in Fig. 2.

As thus illustrated, 'my invention comprises a rectangular frame A adapted to oc-. cupy the space in the windowframeB below the lower sash C. VTo facilitate'insertion and removal of the said frame, a wedge a is applied to one end thereof. Forjthis purpose theendedge of the frame is in- Fmanner with means for limiting clined, as shown at a in Fig. 3, and the wedge a has an inclined engaging surface a2 of similar character. The wedge is also provided with cheeks or flanges a3 at opposite sides thereof that embrace the said frame. When the wedge is forced down between the frame A and the window frame B, the ventilator frame is thereby rmly and tightly secured in place. A short chain at is employed for flexibly connecting `the wedge a with the frame A. By lifting or raising this wedge the frame A is readily removed from the window. The said wedge is of such shape and character that it forms practicallyA a continuation of the frame A, the two` together forming a perfect rectangle.

A sheet metal box or hollow body D is secured by screws Z in the frame A. This provides a chamber having an outer perforated wall d for the admission of air. The front wall Z2 is curvedand hinged at Z3 at its lower edge. At its upper edge the door (Z2 thus formed is provided with a latch d* that engages a catch Z5 on the upper portion of the frame A. The top of the box D has4 an internal flange d6, and the door (Z2 has a similar flanged7 that bears flatwise upon the flange ZG when the door is closed.

Spring prongs ZS are secured to the top por tions of the box D, within the chamber provided thereby, and bear upwardly against thelower edge of the flange d6.; and it will be'seen that these prongs also extend under the flange (Z7 of the door. Curved rods d have their upper and lower ends secured to the inner surface of the door d2. The curved and imperforate cover d10 is hinged at Z3 and covers the air'outlets in the door Z2 when the ventilator is not inv use. This cover all has end walls D which embrace the door l? and which close the ends of the space between said door and cover whenl the latter is open. Thus said cover acts as a deflector to direct theair upward as shown by the arrows. SaidV cover d10 is heldin closed position by gravity. Curvedrods du are secured to the cover mand ywork in openings in the door 11. The innerends of the rods are providedV in any/suitable their out# ward movement.

The curtain or dust collector 6212 is made ofthinporous cloth, such as cheese-cloth, and is supported at its upper edge by a reico lio

movablerod 0513y which rests on the flexible prongs cls, and which is held in place thereon by the flange d6. A rod d is attached to the lower edge of the cloth to make the curtain hang straight; 'but the cloth is pushed on to the two rods in such quantity that it` hangs in vertical folds, as indicated in Fig. 3.. lBetween this curtain and the air inlet openings is a removable screen X15 which filters the air and removes some of the dust. This screen is made with a sheet metal frame doubled upon itself to hold the sheet of porous or perforated material. The sheet metal at the lower edge of the screen is extended upward and curved away from the screen, as shown in Fig. 2, to form a deflector ai which directs the air upward and causes it to strike the face of the curtain before passing under the latter. Of course, the saidv curtain can be made of cloth that willpractically prevent the passage of the air therethrough, but I prefer a thin porous cloth that will allow some of the air at least to pass through. This removes 4the dust, and when the curtain becomes loaded or clogged with dust it can be removed and cleaned, or new cloth can be placed on the rods. The prongs clspierce the cloth to permit the rod (Z13 to find its place back of the fiange d6. For this purpose, and to permit the removal of the rod, the prongs ZS are flexible. To remove the curtain, all that is necessary is to simply reach into the box and pull down on the curtain. To change the position of the screen d the bottom of the box is provided with strips el having seats therein for the lower edge of the screen. By moving the screen from one seat to another the angle thereof, and of the deiiector d1, may be adjusted to suit the requirements. When the air enters, it blows the curtain d against the rods d which causes it to flex and bulge toward the incoming air. This defiects the air downward, and the folds in the cloth catch the dust.

From the foregoing it will be seen that I provide a simple and efficient construction of window ventilator. The parts are all readily removable, and hence the ventilator can be readily cleaned. It gives free ventilation with less danger of dust entering the room than heretofore.

What I claim as my invention is:

l. A ventilator comprising a chamber provided with an opening, a plurality of spring prongs at the topof said'chamber, below the upper edge of said opening, a swinging dust collector of cloth provided at its upper edge with a rod, supported by insertion of said prongs through the cloth immediately below said rod, means bearing against the rod immediately inside of said edge to hold the collector in place, and means for'supporting said ventilator in position to receive the air.

2. A ventilator comprising a chamber provided with air inlet and outlet openings, a removable screen interposed in the path of the air, provided at its lower edge with, a

defiector` extending upwardly and away from the screen in the direction of the air outlet opening, means for holding the lower edge of said screen in different positions, saidl screen and deflector being removable and adjustable as a unit, and means for supporting said ventilator in position to receive the air. 1

3. A ventilator comprising a chamber provided with air inlet and outlet openings, a removable `screen interposed in the path of the air, provided at its `lower edge with a deflector extendingvupwardly and away from the screen in the direction of the air outlet opening, means for changing the angle of the said screen, said screen and deiiector being removable and adjustable as a unit, and means for supporting said ventilator in position to receive the air.V j

j 4. A ventilator comprising a chamber provided with air inlet and outlet openings, a removable screen interposed in the path yof the air, provided at its lower edge with a deflector extending upwardly and away from the screen in the direction ofthe air outlet opening, a swinging curtain of cloth hung between the said outlet and the upper edgeof said deiector, and means for supporting said ventilator in position to receive the air.

5."A ventilator comprising a chamber provided with air inlet and outlet openings, a removable screen interposed in the path of the air, provided at its lower edge with a deflector extending upwardly and away from the screen in thedirection of the air, outlet opening, a swinging curtain of cloth. hung between the said outlet and the upper edge of said deiiector, curved rods for limiting the swing of said curtain with the `incoming air, and means for supporting said ventilator in position to receive the air.

6. A ventilator comprising a chamber, a swinging curtain of cloth hung in said chamber to move with the air, vertically arranged curved rods disposed in position to limit the swing of said curtain with thev incoming air, having their convex sides toward they curtain, and means for supporting said ventilator in position to receive the air.

7. A ventilator comprising a chamber, a swinging curtain of cloth hung in said chamber to move with the air, vertically arranged curved rods disposed in position` to limit the swing of said curtain with the in-V Y coming air, having their `convex sides toward the curtam, a perforated door for said chamber, upon which door said rods are 'mounted, and` means for supporting said ventilator in position to receive the air.

.8. A ventilator comprising a chamber, a swinging curtain of cloth` hung in said chamber to move with the air, vertically arranged curved rods disposed in position to limit the swing of said curtain with the incoming air, having their convex sides toward the curtain, a perforated door for said chamber, upon which door said rods are mounted, a rectangular frame in which said chamber is mounted, means for latching the upper edge of said door to the said frame, and means for supporting said ventilator in position to receive the air.

9. A ventilator comprising a chamber, a swinging curtain of cloth hung in said chamber to move with the air, vertically arranged curved rods disposed in position to limit the swing of said curtain with the incoming air, having their convex sides toward the curtain, a perforated door for said chamber, upon which door said rods are mounted, a swinging imperforate cover for said door, and means for supporting said ventilator in position to receive theair.

10. A ventilator comprising a chamber through which the air passes, and a flexible curtain hung in said chamber, free to swing with the air, said curtain comprising a sheet of thin porous cloth, upper and lower rods upon which said cloth is held, the cloth being crowded together or gathered on the rods to make it hang in vertical folds, forming pockets for the dust, each rod being removable endwise from the cloth held in folds thereon, and means for supporting said ventilator in position to receive the air. I

1l. A ventilator comprising a chamber through which the air passes, a flexible curtain hung in said chamber, free to swing with the air, said curtain comprising a sheet of thin porous cloth, upper and lower rods upon which said cloth is held, means for engaging and causing said curtain to present a bulging surface to the incoming air, when the curtain swings inward, and means for supporting said ventilator in position to receive the air. y

12. A ventilato-r comprising a chamber through which the air passes, a flexible curtain hung in said chamber, free to swing with the air, said curtain comprising a sheet of thin porous cloth, upper and lower rods upon which said cloth is held, the cloth being crowded together or gathered on the rods to make it hang in vertical folds, means for causing said curtain to present a bulging surface to the incoming air, when the curtain swings inward, and means for supporting said ventilator in position to receive the air.

13. A ventilator comprising a chamber, a flexible curtain hung therein to intercept the incoming air, means for causing said curtain to present a bulging surface to the incoming air, when the curtain swings inward, and means for supporting said ventilator in position to receive the air.

14. A ventilator comprising a chamber, a flexible curtain hung therein to intercept the incoming air, means for causing said curtain to present a bulging surface to the incoming air, when the curtain swings with the air, a door for the said chamber, said means being carried on said door, and means for supporting said ventilator in position to receive the air.

15. A ventilator comprising a chamber, a flexible curtain hung therein-to intercept the incoming air, means for causing said curtain to present a bulging surface to the incoming air, when the curtain swings with the air, a door for the said chamber, said means being carried on said door, said door having air outlet openings, means for closing said openings, and means for supporting said ventilator in position to receive the air.

16. A ventilator comprising a chamber provided with an opening for affording access thereto, a perforated door having its lower edge hinged to the lower edge of said opening, means for locking the upper edge of said door, a deflector hinged at its lower edge to the lower edge of said opening, means to limit the outward swing of the deflector, end walls for the space between the door and deflector, and means for supporting said ventilator in position to receive the air.

17. A ventilator comprising a chamber provided with an opening having a downturned flange forming the upper edge thereof, a door hinged at its lower edge to the lower edge of said opening the upper edge of said door having a downturned flange, flexible prongs secured to the top of said chamber and extending forward below both of said flanges, a rod resting on said prongs behind said flange on the chamber, a dust curtain hung on said rod, means for holding said flanges together, and means for supporting said ventilator in position to receive the air.

Signed by me at Chicago, Illinois, this 18th day of January 1912.

MORTON Gr. BUNNELL.

Witnesses:

E. H. CLEGG, GEORGE F. SCHMIDT.

Copies of this patent may be obtained for v cents each, by addressing the Commissioner of Patents, Washington, II. 0'. 

